var a: String? = "Hello world"

var b: String? = "Hello world"

var c: String? = "Hello other world"

val d = <warning descr="SSR">a != b</warning>

val e = <warning descr="SSR">!(a?.equals(b) ?: (b === null))</warning>

val f = a != c

val g = c != b

val h = !(a?.equals(c) ?: (b === null))

val i = !(c?.equals(b) ?: (b === null))

val j = !(a?.equals(b) ?: (c === null))

val k = !(a?.equals(b)!!)

val l = a !== b

val m = a == b